Controller for data processing system

Details Controller for data processing system Controller for data processing system

1979-09-14

1981-01-13

Thomas, James D.

Boots, shoes, and leggings

G06F 1300

Patent

active

042453070

ABSTRACT:
A controller for at least one secondary storage device for use in a data processing system having a system bus which accommodates a device or a CPU that first acquires control, a device bus that has the same address, data and control format as the system bus and a cache bus which maintains its own timing for address and data signals. The controller has means for transferring the control signals between the device bus and the system bus to establish control over the system bus by the secondary storage device. The data, address and control signals are transferred between the device bus and the cache bus in accordance with the cache bus timing.

REFERENCES:
patent: 3820079 (1974-06-01), Bergh
patent: 3934232 (1976-01-01), Curley
patent: 3999163 (1976-12-01), Levy
patent: 4016541 (1977-04-01), Delagi
patent: 4028663 (1977-06-01), Royer
patent: 4055851 (1977-10-01), Jenkins
patent: 4067059 (1978-01-01), Derchak

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